Happy Birthday Tiara - Tiara For Birthday Girl In Silver Funny Party Hats One size fits most older children, teens, and adults, reads Happy Birthday across the front. Every princess needs a crown and we have the perfect one! Tiara is perfect for the guest of honor with its jeweled decorations and shiny accents. Young princess will feel so important and majestic wearing this tiara she wont want to take it off. Tiara is made from silver coated rigid plastic and features faux jewels to decorate the crown.